To combat firms exploiting transfer pricing as a tool for tax avoidance, the Organisation for Economic Co-operation and Development (OECD) introduced the Base Erosion and Profit Shifting Action 13 (BEPS 13), enhancing tax transparency and the exchange of information with tax authorities. Interviewing senior-level transfer pricing advisors and tax officials, we investigate how and why multinational enterprises (MNEs) respond to this new regulation. By conducting this research, we contribute to the scarce literature assessing the impact of tax disclosure to tax authorities and, specifically, the implications of BEPS 13. The study finds that MNEs attach more importance to tax compliance and are more averse towards tax avoidance, which is mainly driven by higher audit pressure. Additionally, MNEs experience additional costs to comply with the different implementations in countries, centralise tax data with IT systems within the organisation, and set up multilateral Advance Pricing Arrangements (APAs) and Mutual Agreement Procedures (MAPs). To avoid (other forms of) tax avoidance being considered by companies, policymakers should address these concerns of increased compliance costs.